code: def testNodesPyTestNodeAndPyTestNode(self):
      self.runNodesTest("py.TestNode", "py.TestNode")
  
file_path: nupic-legacy/tests/integration/nupic/engine/network_testnode_interchangeability.py
imports: import logging
  import unittest2
  from nupic.engine import Network, Dimensions
label_desc: Use image node_id 4 for calling the NetworkTestNodeInterchangeabilityTest obj's underlying member method code with example usage: obj.testNodesPyTestNodeAndPyTestNode() without return types